Question

In the following exercises, simplify each expression.

$-12+\left(-8\right)+7$

Short answer

The given expression is simplified to$-13.$

Step-by-step solution

Step 1. Given information

The expression is$-12+\left(-8\right)+7$

Step 2. Formula used

$+\left(-a\right)=-a$

Step 3. Simplify

$$\begin{gathered} -12+\left(-8\right)+7=-12-8+7\text{use}+(-8)=-8 \\ =-20+7 \\ =-13 \end{gathered}$$

Hence, the expression is simplified to$-13.$